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10.09.2019 •
Physics
Astraight, nonconducting plastic wire 9.50 cm long carries a charge density of 130 nc/m distributed uniformly along its length. it is lying on a horizontal tabletop.a) find the magnitude and direction of the electric field this wire produces at a point 4.50 cm directly above its midpoint.b)if the wire is now bent into a circle lying flat on the table, find the magnitude and direction of the electric field it produces at a point 4.50 cm directly above its center.
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Ответ:
A) E = 3.70*10^{4} N/C
B) E = 2.281*10^3 N/C
Explanation:
given data:
charge density
length of wire = 9.50 cm
a) at x = 4.5 m above midpoint, electric field is calculated as
x = 4.5 cm
midpoint a = 4.5 cm = 0.0475 m
E = 3.70*10^{4} N/C
B) when wire is in circle form
= 1.235*10^{-8} C
Radius of circle
r = 1.511*10^{-2} m
E = 2.281*10^3 N/C
Ответ:
3.1
Step-by-step explanation: